143 lines
3 KiB
Ruby
143 lines
3 KiB
Ruby
# frozen_string_literal: true
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module ExceedQueryLimitHelpers
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MARGINALIA_ANNOTATION_REGEX = %r{\s*\/\*.*\*\/}.freeze
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def with_threshold(threshold)
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@threshold = threshold
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self
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end
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def for_query(query)
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@query = query
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self
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end
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def threshold
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@threshold.to_i
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end
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def expected_count
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if expected.is_a?(ActiveRecord::QueryRecorder)
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expected.count
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else
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expected
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end
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end
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def actual_count
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@actual_count ||= if @query
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recorder.log.select { |recorded| recorded =~ @query }.size
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else
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recorder.count
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end
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end
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def recorder
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@recorder ||= ActiveRecord::QueryRecorder.new(skip_cached: skip_cached, &@subject_block)
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end
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def count_queries(queries)
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queries.each_with_object(Hash.new(0)) { |query, counts| counts[query] += 1 }
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end
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def log_message
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if expected.is_a?(ActiveRecord::QueryRecorder)
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counts = count_queries(strip_marginalia_annotations(expected.log))
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extra_queries = strip_marginalia_annotations(@recorder.log).reject { |query| counts[query] -= 1 unless counts[query].zero? }
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extra_queries_display = count_queries(extra_queries).map { |query, count| "[#{count}] #{query}" }
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(['Extra queries:'] + extra_queries_display).join("\n\n")
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else
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@recorder.log_message
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end
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end
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def skip_cached
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true
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end
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def verify_count(&block)
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@subject_block = block
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actual_count > expected_count + threshold
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end
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def failure_message
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threshold_message = threshold > 0 ? " (+#{@threshold})" : ''
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counts = "#{expected_count}#{threshold_message}"
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"Expected a maximum of #{counts} queries, got #{actual_count}:\n\n#{log_message}"
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end
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def strip_marginalia_annotations(logs)
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logs.map { |log| log.sub(MARGINALIA_ANNOTATION_REGEX, '') }
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end
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end
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RSpec::Matchers.define :issue_same_number_of_queries_as do
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supports_block_expectations
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include ExceedQueryLimitHelpers
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def control
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block_arg
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end
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def control_recorder
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@control_recorder ||= ActiveRecord::QueryRecorder.new(&control)
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end
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def expected_count
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@expected_count ||= control_recorder.count
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end
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def verify_count(&block)
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@subject_block = block
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(expected_count - actual_count).abs <= threshold
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end
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match do |block|
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verify_count(&block)
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end
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failure_message_when_negated do |actual|
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failure_message
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end
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def skip_cached
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false
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end
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end
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RSpec::Matchers.define :exceed_all_query_limit do |expected|
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supports_block_expectations
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include ExceedQueryLimitHelpers
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match do |block|
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verify_count(&block)
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end
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failure_message_when_negated do |actual|
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failure_message
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end
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def skip_cached
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false
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end
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end
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# Excludes cached methods from the query count
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RSpec::Matchers.define :exceed_query_limit do |expected|
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supports_block_expectations
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include ExceedQueryLimitHelpers
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match do |block|
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verify_count(&block)
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end
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failure_message_when_negated do |actual|
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failure_message
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end
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end
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